Mitsui Minings & Melting Co., Ltd.

Akihiro Nara

Takahiko Sakaue

Yunosuke Nakahara

Yuki Nagao

Takashi Wakabayashi

Ohki Houshito

Yasunori Imada

Shinji Aoki

Hiroyuki Iseki

An internal combustion engine exhaust gas purifying catalyst carrier has a core body formed of a CeO&#x2014;ZrOsolid solution or a CeO&#x2014;ZrO&#x2014;LaOsolid solution, and CeOsupported on the surface of the core body, wherein the core body has a CeOcontent of 5 to 35 mass % and an LaOcontent of 0 to 10 mass %, on the basis of the mass of the carrier, and the amount of CeOsupported on the core body is 5 to 17 mass %, on the basis of the mass of the carrier.

Carrier for internal-combustion engine exhaust gas purification catalyst

An electroconductive particle having a core particle and a tin oxide-containing coating layer on the core particle. The tin oxide of the coating layer has a crystallite size of 70 to 200 &#x212b;. The electroconductive particle preferably has a ratio of Rto Rof 1 to 250, wherein Rand Rare respective surface resistivities of electroconductive films formed of a coating composition containing the electroconductive particle and prepared by 1-hour dispersing and 3-hour dispersing, respectively. The coating layer preferably comprises dopant element-free, electroconductive tin oxide.

Electroconductive particles

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Yamaguchi, Japan

Akihiro Nara